wasabii commented on PR #5276:
URL: https://github.com/apache/calcite/pull/5276#issuecomment-5786369497

   So, need advice here probably.... maybe....
   
   I made VARIANT work. By passing in RTTI. Which the JSON functions do know, 
at least loosely. They know whether they extracted a String, Integer, etc out 
of the JSON. So they can safely pass this. But, it turns out, RETURNING ARRAY 
VARIANT should probably be legal syntax. And on this one I'm stymied. Since the 
array can be non homogeneous. Or homogeneous. And the existing RTTI types don't 
have anything for that. I could pass in a List<RTTI>. Or a single one. Or wrap 
either in another class........
   
   This is a pretty narrow case I'm sure. But I'd like this as complete as 
possible I suppose.


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